Weltrend | Products

Touch screen controllers

WT5700

WT5700 is a 1-12 keys capacitive touch key sensor. It is designed for replacing button and also can be configured as matrix scan function. WT5700 has low power consumption, so it is suitable for consumer products and portable applications.

Features

- Maximal 12 channel input sensor
- Auto sensitivity calibration
- 3 sensitivity option pins
- 2 sensitivity control registers
- Anti-noise circuit embedded
- 24ms response time
- 2 output modes
- Direct output: 12 output pad (open drain output)

- Serial output (I2C) and include interrupt pin
- Output polarity option: active high or active low
- 6 output expander(maximum)
- Open-drain digital output with maximum drain current 8mA
- Wide operating voltage: 2.2V ~ 5.5V
- 3 operation modes: Normal mode, Slow down mode and Sleep mode
- Low operating current
- Normal mode

- 3.3V: Typical 150uA

- 5.0V: Typical 315uA

- Slow down mode

- 3.3V: Typical 35uA

- 5.0V: Typical 75uA

- Sleep mode

- 3.3V: Typical 0.6uA

- 5.0V: Typical 0.7uA
- Package type
- LQFP48

- SSOP24

- SOP16

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